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rtp: add helpers for header extensions

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Add helpers and defines for the NTP-64 and NTP-56 header extensions.
This commit is contained in:
Wim Taymans 2012-09-24 12:13:32 +02:00
parent 6cbcca0bc5
commit 82d327fb91
4 changed files with 207 additions and 12 deletions
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2
gst-libs/gst/rtp/Makefile.am
View file

@ -3,6 +3,7 @@ libgstrtpincludedir = $(includedir)/gstreamer-@GST_API_VERSION@/gst/rtp
libgstrtpinclude_HEADERS = gstrtpbuffer.h \
gstrtcpbuffer.h \
gstrtppayloads.h \
gstrtphdrext.h \
gstrtpbaseaudiopayload.h \
gstrtpbasepayload.h \
gstrtpbasedepayload.h
@ -12,6 +13,7 @@ lib_LTLIBRARIES = libgstrtp-@GST_API_VERSION@.la
libgstrtp_@GST_API_VERSION@_la_SOURCES = gstrtpbuffer.c \
gstrtcpbuffer.c \
gstrtppayloads.c \
gstrtphdrext.c \
gstrtpbaseaudiopayload.c \
gstrtpbasepayload.c \
gstrtpbasedepayload.c

28
gst-libs/gst/rtp/gstrtcpbuffer.h
View file

@ -66,6 +66,8 @@ typedef enum
* @GST_RTCP_RTPFB_TYPE_TMMBR: Temporary Maximum Media Stream Bit Rate Request
* @GST_RTCP_RTPFB_TYPE_TMMBN: Temporary Maximum Media Stream Bit Rate
* Notification
* @GST_RTCP_RTPFB_TYPE_RTCP_SR_SEQ: Request an SR packet for early
* synchronization
* @GST_RTCP_PSFB_TYPE_PLI: Picture Loss Indication
* @GST_RTCP_PSFB_TYPE_SLI: Slice Loss Indication
* @GST_RTCP_PSFB_TYPE_RPSI: Reference Picture Selection Indication
@ -80,22 +82,24 @@ typedef enum
typedef enum
{
/* generic */
GST_RTCP_FB_TYPE_INVALID = 0,
GST_RTCP_FB_TYPE_INVALID = 0,
/* RTPFB types */
GST_RTCP_RTPFB_TYPE_NACK = 1,
GST_RTCP_RTPFB_TYPE_NACK = 1,
/* RTPFB types assigned in RFC 5104 */
GST_RTCP_RTPFB_TYPE_TMMBR = 3,
GST_RTCP_RTPFB_TYPE_TMMBN = 4,
GST_RTCP_RTPFB_TYPE_TMMBR = 3,
GST_RTCP_RTPFB_TYPE_TMMBN = 4,
/* RTPFB types assigned in RFC 6051 */
GST_RTCP_RTPFB_TYPE_RCTP_SR_REQ = 5,
/* PSFB types */
GST_RTCP_PSFB_TYPE_PLI = 1,
GST_RTCP_PSFB_TYPE_SLI = 2,
GST_RTCP_PSFB_TYPE_RPSI = 3,
GST_RTCP_PSFB_TYPE_AFB = 15,
GST_RTCP_PSFB_TYPE_PLI = 1,
GST_RTCP_PSFB_TYPE_SLI = 2,
GST_RTCP_PSFB_TYPE_RPSI = 3,
GST_RTCP_PSFB_TYPE_AFB = 15,
/* PSFB types assigned in RFC 5104 */
GST_RTCP_PSFB_TYPE_FIR = 4,
GST_RTCP_PSFB_TYPE_TSTR = 5,
GST_RTCP_PSFB_TYPE_TSTN = 6,
GST_RTCP_PSFB_TYPE_VBCN = 7,
GST_RTCP_PSFB_TYPE_FIR = 4,
GST_RTCP_PSFB_TYPE_TSTR = 5,
GST_RTCP_PSFB_TYPE_TSTN = 6,
GST_RTCP_PSFB_TYPE_VBCN = 7,
} GstRTCPFBType;
/**

139
gst-libs/gst/rtp/gstrtphdrext.c Normal file
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@ -0,0 +1,139 @@
/* GStreamer
* Copyright (C) <2012> Wim Taymans <wim.taymans@gmail.com>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public
* License along with this library; if not, write to the
* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
* Boston, MA 02111-1307, USA.
*/
/**
* SECTION:gstrtpexthdr
* @short_description: Helper methods for dealing with RTP header extensions
* @see_also: #GstRTPBasePayload, #GstRTPBaseDepayload, gstrtpbuffer
*
* <refsect2>
* <para>
* </para>
* </refsect2>
*
* Last reviewed on 2012-09-24 (1.0)
*/
#include "gstrtphdrext.h"
#include <stdlib.h>
#include <string.h>
/**
* gst_rtp_hdrext_set_ntp_64:
* @data: the data to write to
* @size: the size of @data
* @ntptime: the NTP time
*
* Writes the NTP time in @ntptime to the format required for the NTP-64 header
* extension. @data must hold at least #GST_RTP_HDREXT_NTP_64_SIZE bytes.
*
* Returns: %TRUE on success.
*/
gboolean
gst_rtp_hdrext_set_ntp_64 (gpointer data, guint size, guint64 ntptime)
{
g_return_val_if_fail (data != NULL, FALSE);
g_return_val_if_fail (size >= GST_RTP_HDREXT_NTP_64_SIZE, FALSE);
GST_WRITE_UINT64_BE (data, ntptime);
return TRUE;
}
/**
* gst_rtp_hdrext_get_ntp_64:
* @data: the data to read from
* @size: the size of @data
* @ntptime: the result NTP time
*
* Reads the NTP time from the @size NTP-64 extension bytes in @data and store the
* result in @ntptime.
*
* Returns: %TRUE on success.
*/
gboolean
gst_rtp_hdrext_get_ntp_64 (gpointer data, guint size, guint64 * ntptime)
{
g_return_val_if_fail (data != NULL, FALSE);
g_return_val_if_fail (size >= GST_RTP_HDREXT_NTP_64_SIZE, FALSE);
if (ntptime)
*ntptime = GST_READ_UINT64_BE (data);
return TRUE;
}
/**
* gst_rtp_hdrext_set_ntp_56:
* @data: the data to write to
* @size: the size of @data
* @ntptime: the NTP time
*
* Writes the NTP time in @ntptime to the format required for the NTP-56 header
* extension. @data must hold at least #GST_RTP_HDREXT_NTP_56_SIZE bytes.
*
* Returns: %TRUE on success.
*/
gboolean
gst_rtp_hdrext_set_ntp_56 (gpointer data, guint size, guint64 ntptime)
{
guint8 *d = data;
gint i;
g_return_val_if_fail (data != NULL, FALSE);
g_return_val_if_fail (size >= GST_RTP_HDREXT_NTP_56_SIZE, FALSE);
for (i = 0; i < 7; i++) {
d[6 - i] = ntptime & 0xff;
ntptime >>= 8;
}
return TRUE;
}
/**
* gst_rtp_hdrext_get_ntp_56:
* @data: the data to read from
* @size: the size of @data
* @ntptime: the result NTP time
*
* Reads the NTP time from the @size NTP-56 extension bytes in @data and store the
* result in @ntptime.
*
* Returns: %TRUE on success.
*/
gboolean
gst_rtp_hdrext_get_ntp_56 (gpointer data, guint size, guint64 * ntptime)
{
guint8 *d = data;
g_return_val_if_fail (data != NULL, FALSE);
g_return_val_if_fail (size >= GST_RTP_HDREXT_NTP_56_SIZE, FALSE);
if (ntptime) {
gint i;
*ntptime = 0;
for (i = 0; i < 7; i++) {
*ntptime |= d[6 - i];
*ntptime <<= 8;
}
}
return TRUE;
}

50
gst-libs/gst/rtp/gstrtphdrext.h Normal file
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@ -0,0 +1,50 @@
/* GStreamer
* Copyright (C) <2012> Wim Taymans <wim.taymans@gmail.com>
*
* gstrtphdrext.h: RTP header extensions
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public
* License along with this library; if not, write to the
* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
* Boston, MA 02111-1307, USA.
*/
#ifndef __GST_RTPHDREXT_H__
#define __GST_RTPHDREXT_H__
#include <gst/gst.h>
#include <gst/rtp/gstrtpbuffer.h>
G_BEGIN_DECLS
#define GST_RTP_HDREXT_BASE "urn:ietf:params:rtp-hdrext:"
/* RFC 6051 */
#define GST_RTP_HDREXT_NTP_64 "ntp-64"
#define GST_RTP_HDREXT_NTP_64_SIZE 8
gboolean gst_rtp_hdrext_set_ntp_64 (gpointer data, guint size, guint64 ntptime);
gboolean gst_rtp_hdrext_get_ntp_64 (gpointer data, guint size, guint64 *ntptime);
#define GST_RTP_HDREXT_NTP_56 "ntp-56"
#define GST_RTP_HDREXT_NTP_56_SIZE 7
gboolean gst_rtp_hdrext_set_ntp_56 (gpointer data, guint size, guint64 ntptime);
gboolean gst_rtp_hdrext_get_ntp_56 (gpointer data, guint size, guint64 *ntptime);
G_END_DECLS
#endif /* __GST_RTPHDREXT_H__ */